Storage-battery electrolyte



Patented Sept. 119, i922.

" warren stars meats Riemann E. BANKS, orwasnme rort, DISTRICT orcorxoranra.

STORAGE-BATTERY ELECTROLYTE.

No Drawing.

To all whom it may concern: Be it known that I, R'rormnn E. BANKS, acitizen of United States, residing at ,Washington, District of Columbia,have invented new and useful Improvements in sulphuric acid and water,and preferably chlorin water, although in some cases the last mentionedingredient can'be omitted or other materials substituted therefor.

, In making up the electrolyte,,l[ preferably proceed as follows: 3gallons of strong sulphuric acid(preferab]y 1.835'specific gravity) are.niixed with water in amount sufficient 'to reduce the gravity to 1.200.About 6 gallonsof water may be used. Thenan .2 additional 7 gallonsofthe strong sulphuric acid are added toithe liquid well mixed duringthe addition of this acid.

A separate solution is made by mixing 7 10 pounds of iron sulfate,preferablyferrio sulfate, with 9 gallons of water. adding a. solution of"one pound of aluminum sulfate in 4 gallons of water, adding one poundof copper. sulfate dissolved in one gallon of water, andpreferably-adding two.

- ounces of chlorin water, (i.- e., saturated solution .of chlorin inwater). This solution containing the ironsulfate, aluminum sulfate,copper sulfate and chlorin water, is then mixed with the mixed sulphuric40 acid, preferably while the latter is hot. it

is well 'understood that the mixing of the sulphuric acid with the waterand then adding more concentrated sulphuric acidfto v ving large.quantities of water'iand sulfuric ea the'same heats up the mixture. I

added to bring the gravity -of the mixture down to;1 .250 specificgravity (25 gallonsof, water, ordinarily being required).- The in astorage batteryand can be put up into bottles, jugs or the Iikegandplaoed on Application filed June trolyte, which is suitable for use inany A sufficient amount of water is then.

1922. Serial ab. 565,446;

. the market without any further treatment. 1

It will be understood that the sulphuric acid is preferably quite pure,although cortain impurities which might be present therein, such as leadsulfate will be largely precipitated during the operation of di-.luting' the same or will settle out after the mixture has beencompleted. 'It isnot necessary to employ distilled .water i for makingup the solutions or for making up the electrolyte, but/Water which issubstantially free. from injurious materials, such \as nitrates andnitrites, should of course .be

employed. I i

The use of this solution as an electrolyte in lead plate storagebatteries, has been found to very considerably increase the efliciencyof the battery, and the battery will last much longer when this solutionis used,

than when ordinary sulphuric acid and water mixture are used. The. abovebatch of material, will make about something over 50 gallons of theelectrolyte, Y I claim:

1. A. storage battery electrolyte comprising sulfates of iron, aluminumand copper, sulfuric acid and water.

2. A storage battery electrolyte, compris-' go ing large quantities ofwater and sulfuric 1 acid, a smaller amount of ferric sulfate,

still smaller amounts of copper sulfate and a aluminum sulfate.

, 3. A storage battery ele ing approximately the followingingredients:-sul-phuric acid of 1.835 specific gravity about "10gallons; ferric sulfate, about 10 pounds; aluminum sulfate, about 1pound; copper sulfate, about 1 pound; a0

chlorin water, about 2 ounces; together with a sufficient amount ofwater to glve' a specific gravity of about 1.25.

'4."A storage batteryelectrolyte, comprisacid, a smaller amount of.ferric sulfate, 'i still smaller amounts of copper sulfate and aluminumsulfate, and a very small amount of free chlorin.

In testimony-w .ture. 1 .l

- j :RJICHARD E.,BAS'."

ctrolyte contain-v 8B hereof I afiix my sigma- .100

